Scrolling carousel on desktop

Spotted by Sushan Sharma, an arrow appears to the right of a PLA block that appears at the top of the mainline results. Once you finish scrolling, the arrow appears on the left side of the ad block.

This treatment is similar to the scrollable PLA carousel that Google displays in mobile search results.

This, of course, is not the only test Google is running on PLA layouts on desktop. Earlier this year, an expandable variation that showed up to 16 ads was spotted by ChannelAdvisor.

Ranked PLAs for “top” and “best” products

Just yesterday, a test that first started in 2014 rolled out of testing. Now, when a search includes a qualifier like “top” or “best,” the product listing ads will most likely be numbered or ranked.

Here’s what that looks like on mobile. Instead of numbers in gray circles, ads are ranked by 1st, 2nd and 3rd with bright blue flag icons — the same blue used in other page elements.

How does the ranking work? Google clarifiedon Twitter that on “best” product queries, first the top-rated products are selected to participate in the auction, where they then compete against each other for ad position. So the number one, or first ranked, ad isn’t necessarily the product with the best rating.

We believe these ratings will help differentiate products across google.com and google.com/shopping and will help merchants drive more qualified traffic through Product Listing Ads. In initial tests, product ratings also helped increase click-through-rates of Product Listing Ads.